Toxic Effect of Glyphosate on Seed Germination and Seedling Growth of Chinese Fir
Glyphosate is one of the most widely used herbicides in forestry and agricultural production,but it may affect the non-target organisms in soils.Therefore,a laboratory experiment was conducted to investigate the effects of glyphosate on seed germination and seedling growth of Chinese fir which is one of the important fast-growing species in the south and assess the ecological risk of glyphosate to artificial forest.The results showed that,the seed germination rate as well as the root length,stem length,leaf length and fresh weight of seedlings decreased significantly with the increase of glyphosate.The root length was more sensitive to glypho-sate than other indexes.In addition,with the increase of glyphosate,the activity of SOD and chlorophyll content in Chinese fir seedlings decreased,while the activity of CAT and MDA content increased.The activity of POD presented earlier increased and then declined.There is an inhibitory effect of glyphosate on Chinese fir seeds and seedlings,which led to antioxidant enzyme dysfunction,oxidative damage of cell and declined chlorophyll synthesis.
国家科技期刊平台
NSTL
万方数据
维普
